Support

Last updated: April 23, 2026

If you encounter issues with importing books, reading progress, AI responses, notes, or version updates, contact the developer through one of the methods below.

Primary support

Email:

Optional public channels

• X / Twitter: https://x.com/LangInOS

Include this when reporting a problem

• App version
• Device model and system version
• A short issue description
• Steps to reproduce
• Whether the issue happened in reading, thinking, organizing, or settings

Recommended contact policy

Email is the recommended default support method for App Store review and user support clarity. X / Twitter can be used as an additional public channel. WeChat QR codes are not included here by default because App Store support metadata still works best with a direct text-based contact path and a normal support page.